OPCO Laboratory, Fitchburg, MA, offers a replication process that duplicates the profile of a precision optical surface from a master. The process can produce a range of both ruled and holographic diffraction gratings, reflective and transmission holographic optical elements, and dual-wavelength gratings, as well as plano and conic sections. Substrate materials include glass, silicon carbide, ceramic, and metals such as beryllium, aluminum, titanium, and stainless steel. Additional mounting holes may be incorporated into a metal replica.

altDiffraction gratings are produced in sizes to 110 × 110 mm with groove densities from 40 g/mm to 3600 g/mm, with available wavelengths from the deep UV to the far IR. Surface accuracy and radii can be certified to customer specifications using a ZYGOTM interferometric measuring system, profilometer, or other measuring system.

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